Breeding for Fruit Quality in Melon

Fernández-Trujillo, J.P.; Picó, Belén; García-Más, Jordi; Álvarez, J. M.; Monforte, Antonio J.

doi:10.1002/9780470959350.ch12

Cited by 25 publications

(30 citation statements)

References 89 publications

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“…This virus is a potential serious problem in these crops, especially in melons of the subspecies melo in which we observed more severe infections in a wide diversity of germplasm, both commercial (such as cantalups, variety cantalupensis, and casaba melons, variety inodorus) and exotic resources originating from its diversification area (varieties ameri, flexuosus and dudaim). These exotic accessions are considered to be the origin of commercial varieties and are an underutilized potential reservoir of interesting genes for breeding commercial melons (Pitrat 2008;Fernández-Trujillo et al 2011).…”

Section: Discussionmentioning

confidence: 99%

Mechanical transmission of Tomato leaf curl New Delhi virus to cucurbit germplasm: selection of tolerance sources in Cucumis melo

2015

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Cucurbits are major crop species, including fruits and vegetables cultivated worldwide that supply essential vitamins and minerals to current diets in developed and developing countries. Viral diseases are main factors affecting cucurbits cultivation. The most widespread and damaging have been aphidborne viruses belonging to the Potyviridae family. Whitefly-transmitted begomoviruses (Geminiviridae) have been identified more recently in different cucurbit species. A severe outbreak of Tomato leaf curl New Delhi virus (ToLCNDV) occurred in pumpkins and melons in the main production area of Southern Spain in 2012-2014. We developed a mechanical inoculation method to facilitate the screening of germplasm against this virus. Mechanical transmission with this method was confirmed in 4 genera and 13 species of the family, including the main crops, cucumber, melon, watermelon and pumpkins, and also croprelated exotic germplasm (landraces and wild species) used for cucurbits breeding. Diversity in the response was observed within and among species. Tolerance to mechanical transmission of ToLCNDV was identified in melon, within Cucumis melo subsp. agrestis var. momordica and in wild agrestis accessions. All the tolerant accessions came from India, the country in which this virus was firstly reported. Some of these accessions have been previously reported to be tolerant or resistant to other viruses and as they are fully crossable to commercial melons, they are good sources to develop new melon varieties with tolerance to ToLCNDV.

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Section: Discussionmentioning

confidence: 99%

Mechanical transmission of Tomato leaf curl New Delhi virus to cucurbit germplasm: selection of tolerance sources in Cucumis melo

2015

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“…2). Other fruit traits such as rind colour, flesh content and colour, sweetness, sourness, aromatic compounds, and climacteric behaviour also show an impressive variability within the species (Stepansky et al, 1999;Nuñez-Palenius et al, 2008;Pitrat, 2008;Burger et al, 2006;Fernandez-Trujillo et al 2011).…”

Section: Melon Domestication and Diversificationmentioning

confidence: 99%

The genetic basis of fruit morphology in horticultural crops: lessons from tomato and melon

Monforte

Díaz

Caño‐Delgado

et al. 2013

Journal of Experimental Botany

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198

195

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Fruits represent an important part of the human diet and show extensive variation in size and shape between and within cultivated species. The genetic basis of such variation has been studied most extensively in tomato, where currently six quantitative trait loci (QTLs) involving these traits have been fine-mapped and the genes underlying the QTLs identified. The genes responsible for the cloned QTLs belong to families with a few to many members. FASCIATED is encoded by a member of the YABBY family, CNR/FW2.2 by a member of the Cell Number Regulator family, SlKLUH/FW3.2 by a cytochrome P450 of the 78A class (CYP78A), LOCULE NUMBER by a member of the WOX family including WUSCHEL, OVATE by a member of the Ovate Family Proteins (OFP), and SUN by a member of the IQ domain family. A high portion of the history and current diversity in fruit morphology among tomato cultivars can be explained by modifications at four of these cloned QTLs. In melon, a number of QTLs involved in fruit morphology have been mapped, but the molecular basis for these QTLs is unknown. In the present review, we examine the current knowledge on the molecular basis of fruit morphology in tomato and transfer that information in order to define candidate genes of melon fruit shape and size QTLs. We hypothesize that different members of the gene families identified in tomato may have a role in the regulation of fruit morphology in other species. We anchored the published melon QTL map on the genome sequence and identified the melon family members of the six cloned tomato QTLs in the genome. We investigated the co-localization of melon fruit morphology QTLs and the candidate genes. We found that QTLs for fruit weight co-localized frequently with members of the CNR/FW2.2 and KLUH/FW3.2 families, as well as co-localizations between OFP family members and fruit-shape QTLs, making this family the most suitable to explain fruit shape variation among melon accessions.

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“…For example, the flexuosus melon group presents non-sweet and non-aromatic fruits, and the cantalupensis melon group has highly sweet and aromatic fruit [14]. Additionally, in fruit development, sugar is necessary for energy supply, it also generates turgor for fruit cell enlargement and accumulates in late stages of fruit (contributing to fruit taste) [15].…”

Section: Introductionmentioning

confidence: 99%

Transcriptome profiling of non-climacteric ‘yellow’ melon during ripening: insights on sugar metabolism

et al. 2020

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Background: The non-climacteric 'Yellow' melon (Cucumis melo, inodorus group) is an economically important crop and its quality is mainly determined by the sugar content. Thus, knowledge of sugar metabolism and its related pathways can contribute to the development of new field management and post-harvest practices, making it possible to deliver better quality fruits to consumers.Results: The RNA-seq associated with RT-qPCR analyses of four maturation stages were performed to identify important enzymes and pathways that are involved in the ripening profile of non-climacteric 'Yellow' melon fruit focusing on sugar metabolism. We identified 895 genes 10 days after pollination (DAP)-biased and 909 genes 40 DAP-biased. The KEGG pathway enrichment analysis of these differentially expressed (DE) genes revealed that 'hormone signal transduction', 'carbon metabolism', 'sucrose metabolism', 'protein processing in endoplasmic reticulum' and 'spliceosome' were the most differentially regulated processes occurring during melon development. In the sucrose metabolism, five DE genes are up-regulated and 12 are down-regulated during fruit ripening. Conclusions:The results demonstrated important enzymes in the sugar pathway that are responsible for the sucrose content and maturation profile in non-climacteric 'Yellow' melon. New DE genes were first detected for melon in this study such as invertase inhibitor LIKE 3 (CmINH3), trehalose phosphate phosphatase (CmTPP1) and trehalose phosphate synthases (CmTPS5, CmTPS7, CmTPS9). Furthermore, the results of the protein-protein network interaction demonstrated general characteristics of the transcriptome of young and full-ripe melon and provide new perspectives for the understanding of ripening.

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Breeding for Fruit Quality in Melon

Cited by 25 publications

References 89 publications

Mechanical transmission of Tomato leaf curl New Delhi virus to cucurbit germplasm: selection of tolerance sources in Cucumis melo

Mechanical transmission of Tomato leaf curl New Delhi virus to cucurbit germplasm: selection of tolerance sources in Cucumis melo

The genetic basis of fruit morphology in horticultural crops: lessons from tomato and melon

Transcriptome profiling of non-climacteric ‘yellow’ melon during ripening: insights on sugar metabolism

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